Mercury – Revolution 4 4-Blade Stainless Steel Propeller | 14.6" Diameter x 19" Pitch | Right-Hand Rotation | 4-Blade | Stainless Steel | Polished Finish | 8M0151321

Overview

When you’re running a heavy deep-V boat through rough water or towing a crew behind you on a bright weekend, you need a propeller that doesn’t flinch under pressure. The Mercury Revolution 4 4-Blade Stainless Steel Propeller (Part Number 8M0151321) was built for those kinds of days — the ones that test both your skill and your equipment. It’s the kind of prop that gives you confidence, holding steady through tight turns and rough chop while still delivering that satisfying lift and punch that makes every launch feel effortless. Smooth, sure-footed, and powerful, this prop feels like an extension of your instincts on the water.

Key Features

• Diameter and Pitch: 14.6" Diameter x 19" Pitch

• Rotation: Right-Hand

• Blade Count: Four-Blade design for added stability and control

• Material: Premium stainless steel for unmatched strength and longevity

• Finish: Polished for sleek performance and corrosion resistance

• Hub System: Compatible with Mercury Flo-Torq hub kit (sold separately)

• Design Details: Deep-cup blades with Mercury’s Performance Vent System (PVS) for tunable acceleration and hole shot performance

Engine & Boat Compatibility

• Compatible with Mercury 90 HP and higher Command Thrust outboards

• Works with Mercury and Mariner 135 HP and higher TwoStroke and FourStroke outboards (excluding V10 models)

• Fits MerCruiser Alpha One and Bravo One sterndrives

• Excellent match for deep-V boats, multi-species fishing rigs, tow boats, and offshore setups

Performance Benefits

The Revolution 4 isn’t just about power — it’s about control. When you throttle up, the four-blade design digs in with confident grip, getting heavy boats on plane faster while maintaining a strong midrange pull. It’s especially noticeable when you’re loaded down with passengers or gear — you’ll feel the boat rise smoothly without that lag or hesitation that costs you precious seconds.

Once you’re cruising, this prop shines with its stability. Even in big water or crosswinds, it keeps your hull steady and predictable, giving you more control through turns and chop. The Performance Vent System lets you adjust exhaust flow using different vent plugs, allowing you to fine-tune acceleration based on your setup. It’s one of those small design details that separates a good ride from a great one.

Crafted from premium stainless steel, the Revolution 4 is built to endure years of hard use while keeping its edge. It resists corrosion, holds its shape under heavy stress, and delivers that same crisp response season after season.

Why is this prop a strong choice vs. alternatives?

• Mercury OEM Engineering: You’re getting a prop designed by Mercury’s own experts — tested, refined, and tuned for real-world performance.

• Reliable Holding Power: The deep-cup design delivers exceptional bite in rough conditions and when towing.

• Versatility: Performs equally well on family boats, fishing rigs, and offshore setups — one prop that covers it all.

• Built to Last: Its stainless-steel construction offers years of consistent performance with minimal upkeep.

If you’re the kind of boater who values balance, confidence, and that feeling of control when the water turns unpredictable, this prop will feel like a trusted hand on the wheel — strong, steady, and always ready.

FAQ

Q1: Which Mercury engines does the Revolution 4 4-Blade Propeller fit?
It fits Mercury 90 HP and higher Command Thrust outboards, Mercury and Mariner 135 HP and higher TwoStroke and FourStroke outboards (excluding V10), and MerCruiser Alpha One and Bravo One sterndrives.

Q2: What makes this propeller different from other Mercury options?
The Revolution 4 stands out with its deep-cup, four-blade design, providing stronger midrange power, improved planing, and superior grip under load — perfect for big boats and demanding conditions.

Q3: How do I know if this pitch or size is right for my boat?
A 19" pitch is ideal for boats that need quick planing and strong midrange acceleration without losing top-end speed. Checking your current RPM range and consulting your Mercury dealer can confirm the best fit.

Q4: Can this prop be used in both saltwater and freshwater?
Yes. Its stainless-steel construction and polished finish make it highly resistant to corrosion, performing flawlessly in either environment.

Q5: What hub system does it use?
It uses the Mercury Flo-Torq hub kit, sold separately, which makes installation easy and provides cushioning to protect your drivetrain from impact shock.